Looking at the spec… 305gr for a non-TLR 25c tyre. That’s a lot of rubber on that tire. Full breaker bead? Thats going to be sluggish. This will roll something like a Rubio Pro at best Vittoria Rubino Pro Control 25 Rolling Resistance Review
I’d say you’re these would land at 17psi -21w at 100psi, so these probably cost about 12w-15w per pair over a GP5K.